OpenAI Updates: April 2, 2026

1. OpenAI Closes $122 Billion Funding Round at $852 Billion Valuation

OpenAI. OpenAI completed a $122 billion private financing round, the largest in history, valuing the company at $852 billion post-money and placing it close to a trillion-dollar market cap. Amazon committed $50 billion to the round, with Nvidia and SoftBank each contributing $30 billion, alongside co-leads a16z, D.E. Shaw Ventures, MGX, and TPG. Proceeds are earmarked for expanded compute infrastructure, multi-cloud and chip partnerships, and development of a unified “AI superapp” combining ChatGPT, Codex, and agentic capabilities. Source

2. Codex 0.118.0 Adds Windows Sandbox Security and Device-Code Sign-In

OpenAI. OpenAI released Codex 0.118.0 on April 1, 2026, adding OS-level egress rules for Windows sandbox proxy-only networking to improve security beyond environment-variable-based controls. The release also adds a device-code sign-in flow for ChatGPT to help when browser-based login proves unreliable, supports the prompt-plus-stdin workflow for piped input alongside command-line prompts, and enables custom model providers to fetch and refresh short-lived bearer tokens dynamically. Several bug fixes address Linux sandbox reliability, terminal UI regressions affecting /copy and /resume, and MCP startup robustness. Source